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Media Encoder not recognizing 608 caption track in QuickTime MOV file

Forum|Forum|4 months ago
October 9, 2025
2 replies
114 views

I have a QuickTime MOV file that has an embedded EIA-608 caption track. I need to convert it to a format our broadcast servers can play (XDCAM MXF OP1a with embedded captions).

Added the file to AME (with the "include captions on import" flag enabled). This would be the easiest solution for transcoding. AME does not recognize the caption stream. It recognizes the video and audio and exports those just fine. Just no caption track.

As a test, I tried importing the file to Premiere Pro and it recognized the caption track just fine (and displays correctly in every part of PPro).

I'm wondering if there is some setting I am missing in AME, or whether media encoder is just not working properly. I don't want the workaround of having to import to PPRO every time. I just need AME to transcode in a watch folder, or via drag-and-drop.

I can provide access to the assets, upon request, for analysis.

PPRO VER: 25.5.0

AME VER: 25.5

Thank you

EckiAME

Community Manager

Please share your assets and exact repro steps and I will look into the issue. I will send you a private message in this forum.

Stan Jones

Community Expert

@thxapproved2,

I am Win 11 with PR and AME 25.5.0.

I noted that the default for AME was import captions OFF, but it is possible I changed that. In any event, you had it turned on.

I had a recent sample where I embedded 608 in mov from PR. I opened it in AME and exported as mxf op1a. AME recognized the caption track and embedded it correctly.

I assume your source clip was not created in PR. Can you provide a sample clip?

Stan

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